Transition Measurement and Prediction of a Supersonic Experimental Aircraft Wing Boundary Layer

超音速实验飞机机翼边界层转变测量与预测

• 批准号: 10555333
• 负责人: KOHAMA Yasuaki
• 金额: $ 6.91万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10555333/
• 关键词: Next generation aircraft; Drag-reduction method; Flight test; Transitionmeasurement; Boundary layer control

Through 3 years of the this research project, we have succeeded to clarify the complicated 3D transition mechanism. Especially, swept wing boundary layer transition mechanism is as follows.Stream wise stationary vortex system start to appear as the primary instability. Unsteady wave instabilities of two different frequency modes are induced by this stationary vortices. High frequency secondary instability is considered to be the key sequence for the turbulent transition. By sucking the low momentum flow selectively at the position of stationary vortices, we have succeeded to delay the transition with at least 1/3 of the suction volume compared with the uniform suction case.

通过3年的研究，我们成功地阐明了复杂的三维转换机制。特别是后掠翼边界层转捩机制是：流向定常涡系开始出现，成为主要的不稳定性。这种定常涡引起两种不同频率模式的非定常波动不稳定性。高频二次不稳定性被认为是湍流转捩的关键序列。通过在定常涡位置有选择地抽吸低动量流，我们成功地使转捩延迟，与均匀抽吸情况相比，抽吸体积至少为1/3。

项目成果

S.Kikuchi: "Active flow control technique using piezo-film actuators applied to the sound generation by a cavity"The 3rd ASME/JSME Joint Fluids Eng. Conf,. San Francisco. (CDROM). (1999)

S.Kikuchi：“使用压电薄膜执行器的主动流量控制技术应用于腔体的声音生成”第 3 届 ASME/JSME 联合流体工程。

M.Murayama, K.Nakahashi and S.Obayashi: "Numerical Simulation of Vortical Flows Using Vorticity Confinement Coupled with Unstructured Grid"AIAA Paper. AIAA-2001-0606. 1-10 (2001)

M.Murayama、K.Nakahashi 和 S.Obayashi：“使用涡度约束与非结构化网格耦合的涡流数值模拟”AIAA 论文。

Y.Yokokawa: "Numerical study of excitation of two different instabilities in three-dimensional boundary layer on a yawed cylinder"IUTAM Symposium on Laminar-Turbulent Transition, Sedona Arizona. (1999)

Y.Yokokawa：“偏航圆柱体上三维边界层中两种不同不稳定性激发的数值研究”IUTAM 层流-湍流转变研讨会，亚利桑那州塞多纳。

小栗 英美: "平板境界層における繊維粗面を用いた乱流遷移の制御" 日本機械学会論文集 (B編). 64・625. 2942-2949 (1998)

Emi Oguri：“利用平板边界层中的粗糙纤维表面控制湍流转变”日本机械工程学会会刊（ed.B）2942-2949（1998）。

J.Qiu, J.H.Han, J.Tani, Y.Kohama and Y.Shindo: "Development of Electromagnetic Actuator with Magnetic Fluid and Elastic Membrane for Laminar Flow Control"Transaction of the Japan Society of Mechanical Engineers (C). Vol.66, No.641. 146-152 (2000)

J.Qiu、J.H.Han、J.Tani、Y.Kohama 和 Y.Shindo：“开发用于层流控制的磁流体和弹性膜电磁致动器”日本机械工程师学会会刊 (C)。